Resilient tire for vehicle-wheels.



0. ERICKSON & O. Gt SUNDEN. RBSILIBNT Tm?, EUR VEHICLE WHEELS. APPLIGATIUE FILED FEEJ?, 1912.

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N! En m i u O. ERICKSON c O. G. SUNDEN.

RESILIENT TIRE FOR VEHIOLE WHEELS.

APPLICATION FILED FEB.17, 1912A Patenten Dec. 31, 1912.

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lllll OTTO ERICKSON AND' OLOF Gr. SUNDEN, .OF CHICAGO,- ILLINOIS.

RESILIENT TIRE FOR VEHICLE-WHEELS.

Speccation of Letters Patent.

Applicaton'led February 17, 1912. Serial No. 678`,336

To @Il whom-z't'may concern: 4

Be it known that we', OTTO ERICKSON and @Lor` G, SUNDEN, citizens of. "the United States, and vresidents of the city of Chicago, county offCook, and State of Illinois, have.

vinvented certain new and usefulv Improveof; which the which;

' v resilient -tirefor a y2.5.

ments in Resilient Tires following is a specification.v

resilient'tires for which' will be of improved construction and efficient in operation.

,Y :Other objectswill appear hereinafter.

our invention Ylliththese objects in view, consists vin the combinations and .arrangements ofV parts hereinafter. described and; clai reference to the accompanying drawings forming fapart of this specification, and in Y, Figure l vis asectiona-l side elevation of a vehicle wheel 'embodying our inventio1i,;

. section takenon substantiallyl line m of f3 is a. view similar to Fig. 1

showing a-slightly modified form of our invention, sect-ion Fig.3.

The' referred form of construction, as illustrated in the Figs. l and 2 ofthe draw-y ings, comprises outer andinn'er rings 1 takenfon'substantially line y y of and V2 respectively.- The rings 1 and 2 are arranged concentric, the latterl being of adiameter 4considerably lessthan that of the former so as to permit o f relativev radialmovement of said rings which isrequired during operation of the tire, as vwill be hereinafter set forth. The ring 1 is pref-' piece, the'same being erably cast in a singleA of channel form 'in crossv section, with 'the channel opening inwardly." The ring Qis foi-ined of a plurality of sections 3, the 'con-4 tiguous ends -ofadjacent sections 3 l beingfsecured together by screws 4 and -nuts 5*, said screws passing through perforated outwardly projecting lugs 6 formed at the extremities of said sections. The contiguous faces of adjacent sections are beveledor vinclined, as shown. in order to facilitate the assemblage of the ring v2 during'the'con struction of the rim.- tremitiesof the ring sectionsof inclined disposition .or beveled, the same overlap .eachur invention'will be best understood Fig. 2 is acent-rall transverse' and "Fig 4 is va central transverse- By forming the ez'-v 'for vehiCie-wheeis,

' clear that v'formed at the the outer extremities of the ears l0 slidablyfA engaging other, and during assemblagethe outermost of the overlapping endsL-ofadjacent sections will serve to holdthe other or'in'nermos't of' 'said ends in positionI preparatoryto theinsertion ofthe securing screws 4i y Interposed between the djacentsides of the rings l and 2 are helical compression springs 7 which serve to'yieldingly hold said 4Our invention relates `to improvements in I vehicle wheelsand, has for its object the production of a resilient tirerings normally in concentric position. The springs 7 are arra' be observed, the same being positively held irioperative positionby means of tapering the respective extremities of said-springs.v Said lugs are formed tapering, as'mentioned,

nged--at intervals, as will ect from the'adjacent sides -of tli'e rings l and 2 intov enga-geriientv with Patented-Dec.. 3L1912. i'

in` order to prevent buckling of the inter-` mediate convolutions of thesp'rings thereon during compression of said= springs, it being were said lugs oit-cylindrical form, there 'Wouldbe a likelihood of the convolu- 'tions'.of the'springs buckling thereon or of the convolutioiis engaging upon'the extremit-ies of said Alugs .and thus interfering with. v the proper -action thereof.

Formed at the lateral edges of the-ring 1 lat intervals, are"inwardly projecting radially disposed ears 9 which overlap with outwardly projecting radially'disposed ears 10 lateral,` ledges' of -the 'ring 2,

said rings. The inner sides ofthe ears 9 are of free relative radial movement offormed 'with tapering recesses 11 which are engaged by the ears 10, said ears being correspondingly tapered. This provision will serve to prevent excess-relative rotary movement of the rings,

it being clearthat upon Vrelative' rotary, movement of onebrlthe other of said rings, the extremities @fthe ears 10 will lbe brought intoengagement with the corresponding,extremities'of the recesses .11 and Y serve to `"st op- Vfurther 'relative rotation of said rings nient-is such, vas lwill be' seen, gagemeiit ofthe.` extremities of the ears' 10 with the extremities of therecesses 11' will take place only upon excess. relative rotary movement of said rings,

the metoi1 is; -,suddenly.tlirpinn-tinte;soperas;

Slightrelat'ive rotaf; tionjof thesl'atter being permietedvmbrder. to obviate shocks to the,vehicle.bodyvvhenA 4"springs '7 will be licked transversely to! ab 'Sorb the shock. l l ,I i L 'Arranged upon the periphery of the ring tion'. Q With thefconstruction set forth, upon the motor being. thrown into operation', the

1is a resilient' 'covering12 preferably lof rubber.' The coveringl12 is secured at its 4longitudinal edges Iby vmeans 'oli circular strips ,13 and'screvvs. 14 which pass through' -s'aritl strips, :piercing: the oppositefsides of said ring, as Will be readily understood.

The periphery or tread portionvof the'ring y y 4the preferred formspf construction"iforqcaid is concave in orderthatz .the .covering '12 may be made heavier 'or thicker at this location, thus con'duong to greater resiliency in;

the construction'. The space intervening the' adjacent sidesof the rings 1 'and 2 is closedby 'circular plates 15 the' outer edges'of which are ,rigidly secured to'v the .ring 1 by means of the strips l'and screws 14, said plates 15 'serving to effeotuallyv close the jointvbetwee'n 4said rings and to exclude the dust-and dirt from -the'interior ofthe tire.

The inner surface of the ring 2'is formed 'conical or'tapering in order Ito adapt the 'same to fit the :telly of 'the'orldinary' Wheel constructed forl the ae'cpmin'odatio'n-of the' conventional dernountable rim.-` However, it'

is understood that this tire may bellsecured 'upon the Wheel in any manner'desired.

In Figs. 3 and et' is illustrated a slightly modified form of construction. In ,this forni, the helicalsprings 7 are dispensed -With and substantially .U -shaped 'leaf springs 7 employed in lieu thereof. The central portions of the springs 7 are secured to the ringsl1'and 2 by means of screws 16, the eX- tremities of said springs being provided With lelongated slots 17 for slidable engagement with" lugs 18 projectingV from said rings, thelugs 8 of the preferred construetion being dispensed'vvitli. The remainder of the construction ofy the form shown in v Figs and i is identical with that above described, and so that a repetition Will not manon? be made," like parts ,iii the tW, @Qlitinuctions being indicated by like numerals of'. referfence.' v 4 j 'A tiro ofthe v'const-ruotion.set vforth will-f be found 'topossess greatresihence together With great strength' :anddurability 'This tire is adapted-to serve in 'the -samecapacity asa pneumaticV tire, and-may be manufaotured at a'lcost much ,lessl than tliecostof manufacturing pneumatic tiresas now con-v' strueted.'

While we have nimma@ and 'deseribed "the scope of the appended claim.

Having-described our invention,y what Weclaim as vnew anddesire. to secure by Letters Patent," is: Y

AQv resilient tire for vehicle Wheels ,comprising an 'outer integral ring an inner ring disposed concentrically in -sa'id outer ring and made up' of'a plurality of pants', eachpartliaving'an ear ateach of its ends secured,

to the ear of its next adjacentpart, a porjacent ears beingbeveled and the remaining portion of such surfaces being square; and

'resilient connections between suoli outelrring and said inner ring yieldingly holding such ringAKI concentric. In testimony Whereofvev have signed our vnames to this speciiicati'o'n in tliepr'esence of tWo subscribing' Witnesses.

` oriogERioKsoN.

OLEG. SUN-DEN/ l/Vitnesses 4 JOSHUA R. H. Poms, BRAYTON G. RICHARDS.'

.tion of the engaging, surfaces between-jade; 

